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HP D7171A - NetServer - LPr Introduction Manual

Hp netserver high availability spofless mscs cluster solution.
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NetServer
NetServer
Netserver
HP
september 2000
Documentation
HP Netserver High Availability SPOFless MSCS Cluster Solution
Introduction
This document profiles efforts in evaluating high availability cluster solutions
managed by Microsoft
and Windows
evaluated are two-node clusters using redundant Fibre Channel Arbitrated
Loop (FCAL) technology for the server to storage interconnect and are
intended to be highly reliable and highly available configurations with No
Single Point of Failure (NSPOF) also known in HP as SPOFless.
High availability clusters are designed to reduce risk and costs of downtime
due to hardware or software faults. This high level of system and application
availability is accomplished through the use of redundant and fault tolerant
technologies implemented on different levels of hardware and software.
For example, clustering software improves availability by allowing applications
and services to be transferred to another computer node if a failure event
occurs on one of the nodes.
Overview of the SPOFless System
Achieving Higher Availability through Component Redundancy
SPOFless ensures that a system will be highly available and accessible in
case of any system component failure.
software components eliminates single points of failure. SPOFless system
redundancy falls into three categories.
Redundant Hardware Components: system drives, RAID sets, external
storage controllers, host bus adapters (HBA), network adapters,
multiprocessor servers, Fibre Channel (FC) hubs, switches, power
supplies, processor power modules, and fans.
Redundant Software Components: Microsoft
fault tolerance and adaptive load balancing, HBA and controller drivers
using firmware that supports fail over, and software mirroring.
Fault Tolerant Techniques: hot swappable hard drives, FC controllers,
hot plug/replace/upgrade PCI adapters, cache mirroring, and battery
backup.
®
Cluster Server in Windows NT 4.0
®
2000 Advanced Server operating systems.
®
Enterprise Edition
The solutions
Using redundant hardware and
®
Cluster Server, network
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   Summary of Contents for HP D7171A - NetServer - LPr

  • Page 1

    NetServer NetServer Netserver Documentation HP Netserver High Availability SPOFless MSCS Cluster Solution Introduction This document profiles efforts in evaluating high availability cluster solutions ® ® managed by Microsoft Cluster Server in Windows NT 4.0 Enterprise Edition ® and Windows 2000 Advanced Server operating systems. The solutions evaluated are two-node clusters using redundant Fibre Channel Arbitrated Loop (FCAL) technology for the server to storage interconnect and are...

  • Page 2

    The host bus adapter used in all of our testing was the High Level View of Clustered Systems D8602A HBA. Public Network External Storage The Hewlett-Packard RS/12FC external storage subsystem was used for all configurations. Another storage subsystem could be used if it is on the Private ®...

  • Page 3

    white paper NetServer NetServer Netserver Documentation Redundant Fibre Channel Array Controllers SPOFless systems use redundant HP Fibre Channel array controllers. When a pair of these FC array controllers is installed into an RS/12FC storage cabinet, they operate on two redundant Fibre Channel loops.

  • Page 4

    Supported HP Solutions The SPOF Model The cluster solution based on the RS/12FC, which has been supported by Hewlett-Packard in the past, is known as SPOF. The SPOF solution uses a single Fibre Channel hub to connect two servers to an RS/12FC. A functional diagram of a SPOF cluster is shown below.

  • Page 5

    white paper NetServer NetServer Netserver Documentation Installation and Configuration Functional Diagram of the Direct Connect Cluster (SPOFless) Most of the procedure for installing a SPOFless cluster is Public Network identical to the installation of a SPOF cluster solution. Subsections below only document the differences between a standard cluster installation and a SPOFless cluster installation.

  • Page 6

    white paper NetServer NetServer Netserver Documentation FC Array Assistant Controller Information Screen FC Array Assistant Manual Configuration Screen – Mirrored LUN Mapping...

  • Page 7

    white paper NetServer NetServer Netserver Documentation together, all of the parameters should be checked using the FC Array Assistant utility. For complete information on how to use FC Array Assistant refer to the References section at the end of this document. The second issue has to do with the mapping of LUNs.

  • Page 8

    white paper NetServer NetServer Netserver Documentation Casualty Procedures Failed FC Array Controller In the event of an FC controller failure, the following steps should be taken: Obtain a new controller and upgrade the firmware to the same version of firmware as the working FC controller.

  • Page 9

    Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett-Packard.

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